Shutter-worker



Patented Jan. 9, 1888-.

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UNITED STATES PATENT OFFICE.

SHvUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 270,310, dated January 9, 1853. Application filed April 6, 1882. (Model.)

To all whom it may concern:

Be it known that I, JoHN W. HARRISON, of Wheeling, in the county of Ohio and State of 'est Virginia, have invented a new and useful Improvement in Window-Blind Opening and Holding Devices, of which the following is a full, clear, and exact description.

` Reference is to be had to the accompanying drawings, forming a part ot' this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l represents a partly-sectional side elevation of the invention applied t'o a window-frame and lower-blind hinge. Fig. 2 is a partly-sectional horizontal view of the same, with the blind shown only in part attached;

` and Fig. 3 is a transverse section on the line ling from the interior of a building window' the blind.

a: a in Fig. 1, in illustration ofthe blind holding or locking portion of the invention. Figs. 4, 5, 6, and 7 are detail views. 1

The invention relates to devices for controlblinds or shutters which are on the exterior thereof; and the invention consists in a novel construction and combination ot' parts, as here inafter fully described, and pointed out in the claim.

In the drawings, A indicates a portion of one side of the window-frame, and B the section of the lower hinge ot' the blind, secured thereto andprovided with the arms a.

O is a portion ot' the blind, and D the section of the lower hinge attached to it. The portion'of the section D through which and through the jaw portion .of the fixed section E ofthe hinge the hinge-pin E passes is cast with a socket, b, for said pin, and with an inverted toothed sector or horizontal bevel crownwheel, d, allin one piece with said moving section D.

F is the wheel or bevel pinion, which vengages with the toothed portion dofl the hingesection D, and by which said section, with its attached blind C, is operated toopen and close This pinion F is fast on a horizontal spindle, e, which passes through the window-frame A and through a box, G, secured to the inner side of said frame on the interior of the building. Said box G has acorrugated or toothed projection, G', on its exposed face, the same forming atixed locking device of circular form, with corrugations s on its outer circumference, parallel with the spindle e.

Secured on the inner end of the spindle e is a handle, H, for turning said spindle to operate the blind. This handle is fitted on or formed with a sleeve having a liange, rh, and externally square or angular shouldered portion t', which, when the handle is in its place, abnts against the face of the fixed corrugated projection G'. Fitting lso as to be capable ot' sliding along the same on this angular, or it might be feathered, shouldered portion t' of the handle is a movable lockingl ring or device, I, having inner teeth, k k. By sliding this lockingring l on the shouldered portion i-ot the handle so that its teeth k k enter wit-hin certain ot' the teeth or corrugations of the fixed locking device G', the blind may be locked at any angle to admit air or light, or to limit its movement when prevented from being thrown completely7 open by an adjoining building, and may be fastened either in its open or closed positions from the inside ofthe apartment, so that it cannot be interfered with from the outside.

The above-described construction for locking the shutter at any angle is old.

On the hinge-pin E -is a feather, f, which is entered down through a slot, y, in the upper portion ot' the tixedsection B ofthe hinge and into a corresponding slot or recess, r, in the socket b of the moving section D..

This construction prevents the blind from being taken off its hinges, except by bringing' it in a certain position, which may be indicated by a rib, l, on the top of the hingepin coming in line with a projection, m, on the top of the fixed sectlon B, when the pin E may be lifted out byits featherj' coming in line with the slot g. The blind may then be removed.

Having thus described my invention.7 I claim as new and desire tosecure by Letters .Patent- In a shutter-worker, the combination, with the movable section I), provided with the toothed portion d, and the elongated socket b, having recess r, of the fixed section B, provided with the arms a, the upper one of which is provided With the slot g,'the pin E, provided with the featherf, the pinion F', and the rod e, provided with the handle H, substatitially as and for the purpose set forth.

' JOHN WV. HARRISON. Witnesses:

EDWARD P. OsBoRNE,

LoUIs DEOHERT.

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